BEGIN {
	FS="	"
	return_m=1
}

$1 ~/200712[0-9][0-9]/{
	#if($6 != "") {
	#	temp=($6 + 1)
	#	return_m=return_m * temp
	#}
	print $1 "	" $2 "	" $6
	
}

END {
	#print 2007 "	" 12 "	" return_m - 1
}

